Is there a formula or rule of thumb for the increase or decrease in velocity/pressure from bullet seating depth?
For example a load with a 120 grain bullet that generates 2500 fps seated at 2.200 OAL, what will it be if seated at 2.290 ? (bullet in not touching lands in both cases).
For example a load with a 120 grain bullet that generates 2500 fps seated at 2.200 OAL, what will it be if seated at 2.290 ? (bullet in not touching lands in both cases).